Test the hypothesis that the mean wear @ 100,000 miles is really the same for these twotire brands at LC = 96%.Hint: the denominator for the test statistic is 6.95.

H0: B= G

H1: B G

Bridgestone

Goodyear

n

15

15

20

18

x-bar

45 mm

60 mm

Group of answer choices

a. Same, because 2.06 < 2.15.

b. Same, because -2.06 < 2.15.

c. Different, because 2,06 < 2.15.

d. Different, because -2.06 < 2.15.